Go Back   MustangForums.com > Ford Mustang Tech > 2005 - 2014 Mustangs > GT S197 General Discussion > 5.0L V8 Technical Discussions
Sign in using an external account
Register Forgot Password?
Search


5.0L V8 Technical Discussions Any questions about the 'Coyote' engine, transmission, exhaust, tuners/CAI, or gearing can be asked here!

Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
 
Thread Tools Search this Thread
Old 04-29-2010, 06:09 PM   #1
Gene K
5th Gear Member
 
Gene K's Avatar
 
Join Date: Jun 2007
Vehicle: 2014 Mustang GT
Location: Decatur AL USA
Posts: 2,174
Default 5.0: 368.6 rwhp on a Mustang Dyno!

368.6 rwhp on a Mustang Dyno on a green engine.


http://www.mustang50magazine.com/tec.../photo_03.html
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
__________________
Gene

2014 300A A6 13D
1.957 5.450 8.308 @ 86.54 N/A 12.783 @ 110.81 (850 Miles & +645' DA)

2011 300A M6 3.55 (Sold)

2007 130A M5 3.55 CAI / Doug Stoddard Mailorder Tune / Stock Pirellis (Sold)
1.909 5.443 8.345 @ 84.83 10.845 12.957 @ 106.62
http://i253.photobucket.com/albums/h...nePirellis.jpg
Gene K is offline   Reply With Quote
Old 04-29-2010, 06:56 PM   #2
Hysteric
1st Gear Member
 
Hysteric's Avatar
 
Join Date: Apr 2010
Vehicle: 2011 Roush Stage 2
Location: New Jersey
Posts: 75
Default

368.6*1.12=412.832

Sounds pretty close to Fords estimate of 412HP (the 12% is the most standard estimate i could find on google for the correction of a mustang dyno, since they read low)
Hysteric is offline   Reply With Quote
Old 04-29-2010, 07:07 PM   #3
Gene K
5th Gear Member
 
Gene K's Avatar
 
Join Date: Jun 2007
Vehicle: 2014 Mustang GT
Location: Decatur AL USA
Posts: 2,174
Default

Quote:
Originally Posted by Hysteric View Post
368.6*1.12=412.832

Sounds pretty close to Fords estimate of 412HP (the 12% is the most standard estimate i could find on google for the correction of a mustang dyno, since they read low)
The 12% was just to get to Dynojet numbers not Flywheel Numbers.

That said Im very wary of Mustangs. They read lower if not messed with but are very easy to "Hotrod" by changing "roller mass" and "resistance" numbers. The Dynojet likely reads "Happy" but its a consistent happy.

PS Ford's actual number during certification was 416 bhp. They are allowed a +/- 1% varience.
__________________
Gene

2014 300A A6 13D
1.957 5.450 8.308 @ 86.54 N/A 12.783 @ 110.81 (850 Miles & +645' DA)

2011 300A M6 3.55 (Sold)

2007 130A M5 3.55 CAI / Doug Stoddard Mailorder Tune / Stock Pirellis (Sold)
1.909 5.443 8.345 @ 84.83 10.845 12.957 @ 106.62
http://i253.photobucket.com/albums/h...nePirellis.jpg
Gene K is offline   Reply With Quote
Old 04-30-2010, 01:18 AM   #4
2011CS
1st Gear Member
 
Join Date: Apr 2010
Vehicle: 2011, Ford , Mustang CS
Location: Alberta
Posts: 148
Default

The way it was explained to me was the Mustang dyno was real numbers as in on the road and the Dyno jet was inflated due to no compensation for rolling resistance etc.

Either way 368 is within 60hp of a custom tune of a 2007 with no cats, borla long tubes and Rousch SC with small pulley that I did a few years ago.

Really good numbers for bone stock.

Can't wait to see what the tuners can do!

Jeff
2011CS is offline   Reply With Quote
Old 04-30-2010, 01:46 AM   #5
Driver72
3rd Gear Member
 
Join Date: May 2005
Location:
Posts: 632
Default

Quote:
Originally Posted by Hysteric View Post
368.6*1.12=412.832

Sounds pretty close to Fords estimate of 412HP (the 12% is the most standard estimate i could find on google for the correction of a mustang dyno, since they read low)
Except you don't add 12% to a removed number.
The engine is rated at 412 hp, if you then take away 12% for driveline losses you get 362 rwhp not 368.

If 12% is the known loss for a drivetrain, and the outcome at the rear wheels was 368.6 hp, the crank hp would be roughly 419 hp.
Pretty much in the 415-420 hp I estimated most 5.0's will really make, not the inflated and exaggerated 430-440 hp that some mags have reported based on Dynojet results.
Driver72 is offline   Reply With Quote
Old 04-30-2010, 11:19 AM   #6
SirKnightTG
5th Gear Member
 
SirKnightTG's Avatar
 
Join Date: Mar 2007
Vehicle: 2006 Mustang GT Premium Auto - Vista Blue
Location: Deep in the <3 of Tx
Posts: 3,925
Default

If you assume a typical 15% DL loss, that's 432 bhp. Neat!
__________________
Boomtube crew
TCI StreetFighter crew
Kooks crew
FRPP Hot Rod crew

Dance, Dance...DANCE!!!


camthumpinstang (Gary Marine of Illinois) is a scammer!
SirKnightTG is offline   Reply With Quote
Old 04-30-2010, 05:52 PM   #7
Driver72
3rd Gear Member
 
Join Date: May 2005
Location:
Posts: 632
Default

Quote:
Originally Posted by SirKnightTG View Post
If you assume a typical 15% DL loss, that's 432 bhp. Neat!
But especially with a manual and a solid rear axle, you won't have 15% drivetrain loss these days, unless it's a very inefficient drivetrain.
My dyno experience:
10-12% for FWD
12-14% for RWD
18-20% for AWD

Add an automatic tranny and you can add 1-2% to that.
Driver72 is offline   Reply With Quote
Old 05-01-2010, 12:57 PM   #8
Lax07
2nd Gear Member
 
Lax07's Avatar
 
Join Date: Oct 2009
Vehicle: 2010 Mustang GT
Location: Maryland
Posts: 465
Default

You can't assume 15% drive train loss with the new mustang... it was an electronic steering pump so thats why most people are only using 10% or so... the engine is more efficient
__________________

2010 Ford Mustang GT Premium
Black/Saddle, 5 Speed, 4.6L, 3.55's
Mods coming soon
Lax07 is offline   Reply With Quote
Old 05-01-2010, 01:20 PM   #9
Gene K
5th Gear Member
 
Gene K's Avatar
 
Join Date: Jun 2007
Vehicle: 2014 Mustang GT
Location: Decatur AL USA
Posts: 2,174
Default

Quote:
Originally Posted by Lax07 View Post
You can't assume 15% drive train loss with the new mustang... it was an electronic steering pump so thats why most people are only using 10% or so... the engine is more efficient
Considering Bypassing the Pump on a 2005-2010 showed 0 rwhp on the dyno I dont think thast relative. The power steering pump should only draw power when the wheel is turned. If you have good technique at the track it shoudlnt make a difference. On the street yes,
Some people did see track gains (Which I cant explain if they dont saw on the wheel) but on my car I could not tell the difference in ET between Short and Long Belts.
__________________
Gene

2014 300A A6 13D
1.957 5.450 8.308 @ 86.54 N/A 12.783 @ 110.81 (850 Miles & +645' DA)

2011 300A M6 3.55 (Sold)

2007 130A M5 3.55 CAI / Doug Stoddard Mailorder Tune / Stock Pirellis (Sold)
1.909 5.443 8.345 @ 84.83 10.845 12.957 @ 106.62
http://i253.photobucket.com/albums/h...nePirellis.jpg
Gene K is offline   Reply With Quote
Old 05-01-2010, 01:54 PM   #10
Gene K
5th Gear Member
 
Gene K's Avatar
 
Join Date: Jun 2007
Vehicle: 2014 Mustang GT
Location: Decatur AL USA
Posts: 2,174
Default

I think everyone is glossing over my main point.

On a Mustang the roller mass and resistance settings (measured and set at the factory) are user adjustable. If you dont know what the factory setting on that individual dyno was and didnt check the files you have no way of knowing if its been molested. Im not talking about Car Mass that Mustang uses for simulated performance testing.

By simply changing the roller mass file on a Mustang Dyno you can make a car go from 250 rwhp to 300 rwhp with the customer none the wiser. Many Mustangs are "Hotrodded" to get them to read the same (or even higher) than a Dynojet.

For tuning I prefer a Mustang but you do have to be aware of the potential for a shop to sell you a 50 rwhp tune and prove it without even touching your Car.

PS Im seriously considering putting my car on a privately owned Mustang MD-250 that I know for a fact is still factory set and a Dynojet 224x and see what the difference between the two is on these cars (I have seen differences from 5-20% and its not always linear with power).
__________________
Gene

2014 300A A6 13D
1.957 5.450 8.308 @ 86.54 N/A 12.783 @ 110.81 (850 Miles & +645' DA)

2011 300A M6 3.55 (Sold)

2007 130A M5 3.55 CAI / Doug Stoddard Mailorder Tune / Stock Pirellis (Sold)
1.909 5.443 8.345 @ 84.83 10.845 12.957 @ 106.62
http://i253.photobucket.com/albums/h...nePirellis.jpg
Gene K is offline   Reply With Quote
Old 05-01-2010, 01:54 PM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

Tags
2011, 50, alabama, custom, decatur, dyno, estimater, gt, mail, mustang, mustangs, order, rwhp, sale, testing, tunes

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 07:39 AM.

© Internet Brands, Inc.


This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup